body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
  user-select: none;  /* 防止文本被选中 */
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.app {
  min-width: 60vw  ;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: #ffffff;
}

.main-content {
  flex: 1;
  width: 100vw;
  overflow-y: auto;
  border-top: 1px solid #e0e0e0;
  margin: 0 auto;
}
.container{
  width: 920px;
  margin:0 auto;
}